Sukhumvit is a great location for exploring the city, and this apartment is one of several stylish new condominiums that are going up in Bangkok. It is about a five minute walk to the main drag which features the BTS Skytrain for easy travel, and several opulent mega-shopping malls. There is a 7-Eleven right outside the hotel and bars, massage parlours and other convenience stores within a minutes' travel. The pool on the 9th floor is usually quiet (empty on weekdays) and a good place to relax and the gym is large and well-equipped and there are never more than two or three people in there.
There is a fridge and stove in the kitchen, but the kitchen is only equipped with cutlery and crockery, but no cooking pans or pots, so you will be unable to prepare your own food.
Personally, we found the room quite spacious, and enjoyed the convenient walk along the Skywalk to explore this part of the city. Tuk-tuks and taxis are all over the place are easy to hail, and it's straightforward to get an Uber any time to any destination if you're moving further afield.
All in all this was a great base-camp for exploring Bangkok over the 7 days we were there.